Home / 6,930.12-10,391.20-4,120.14

Finding the Fourth Proportional to 6,930.12, 10,391.20 and 4,120.14

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Solution

The fourth proportional to 6,930.12, 10,391.20 and 4,120.14 is: 6,177.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,930.12 : 10,391.20 = 4,120.14 : x
  2. Step 2: Convert to fraction form
    6,930.12/10,391.20 = 4,120.14/x
  3. Step 3: Cross multiply
    6,930.12x = 10,391.20 × 4,120.14
  4. Step 4: Simplify right side
    6,930.12x = 42,813,198.77
  5. Step 5: Solve for x
    x = 42,813,198.77/6,930.12
  6. Step 6: Final answer
    x = 6,177.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.